摘要
探讨微生物在岩溶作用中的作用 ,需要考察土壤微生物在岩溶地区的生态分布和特性。本文对采自中国西南 4个不同岩溶地区 (重庆金佛山、六盘水米苏嘎、广西弄拉和桂林丫吉村岩溶试验场 )生态系统土壤样品中的细菌、放线菌和真菌进行了数量测定 ,结果表明 ,微生物的数量和组成与赋予不同地形和植被特征的岩溶生态系统的特性高度相关。本文还分析了马山弄拉和岩溶试验场的优势细菌 ,并且进行了初步鉴定 ,结果显示 ,固氮菌科细菌在两个岩溶生态系统土壤中都占优势 ,表明其土壤肥力都在改善。
To find the concrete role of microbes in the Karst processes, it is necessary to investigate the ecological distribution and characteristics of soil microorganisms in Karst areas. The number of microorganisms of soil samples collected from 4 different Karst areas of Southwest China, Jinfu mountain of Chongqing,Misuga of Liu Panshui, Nongla of Guangxi and the Yaji Karst Experimental Station of Guilin, were determined in this paper. The comparative analysis showed that the number and composition of soil microorganisms correlated highly with characteristics of Karst ecosystems featured by their different landscape and vegetation. The predominant bacteria in soil samples from Nongla of Guangxi and the Karst Experimental Station were analyzed and pre-identified as well. The predominant amount of Azotobacteraceae colonies showed that the soil fertility of both the two Karst ecosystems was improving.
出处
《生态学杂志》
CAS
CSCD
北大核心
2004年第2期136-140,共5页
Chinese Journal of Ecology
基金
国家自然科学基金重大研究计划项目 ( 90 2 0 2 0 16)
国家自然科学基金面上项目( 4 0 15 2 0 0 2 )
国土资源部岩溶动力学开放研究实验室资助基金项目
关键词
岩溶生态系统
土壤微生物
植被
Karst ecosystem, soil microorganisms, vegetation.
